CN103418763A - Cooling roller device for preparing high-performance rapid cooling metal thin belt - Google Patents
Cooling roller device for preparing high-performance rapid cooling metal thin belt Download PDFInfo
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- CN103418763A CN103418763A CN2013103241518A CN201310324151A CN103418763A CN 103418763 A CN103418763 A CN 103418763A CN 2013103241518 A CN2013103241518 A CN 2013103241518A CN 201310324151 A CN201310324151 A CN 201310324151A CN 103418763 A CN103418763 A CN 103418763A
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Abstract
The invention discloses a cooling roller device for preparing a high-performance rapid cooling metal thin belt. The cooling roller device mainly comprises a roller base body, roller sleeves, a first cover plate, a main shaft and a second cover plate. The roller base body is arranged on the main shaft, the roller sleeves are arranged on the outer circle side of the roller base body, the first cover plate and the second cover plate are arranged on the two sides of the roller base body respectively, the first cover plate and the second cover plate are connected through the roller sleeves, protrusion rings matched with the roller sleeves are arranged on the peripheral sides of the two cover plates, an annular boss is arranged in the central area of the outer circle of the roller base body, axial square water grooves are formed in central areas of the inner surfaces of the shaft sleeves in a configuration mode, the end faces of the axial square water grooves and the outer circle face of the boss of the roller base body are attached to form axial square cooling water flow channels, and the outer sides of the inner surfaces of the shaft sleeves, the two cover plates and the outer circle face of the roller base body jointly form a left ladder-shaped annular cooling water flow channel and a right ladder-shaped annular cooling water flow channel which are symmetric and arranged at an equal interval in a surrounding mode. Due to the arrangement of the water channel structure of a cooling roller, the aim of temperature field distribution uniformity inside the area where the roller sleeves are in contact with amorphous strips is achieved, and a series of defects, caused by nonuniform cooling, of the amorphous broadband products are overcome.
Description
Technical field
The present invention relates to materials processing and heat transfer technology field, relate in particular to and relate to a kind of cooling roller device for preparing the fast cold metal strip of high-performance.
Technical background
Non-crystaline amorphous metal is develop in the world in recent decades very popular and have one of new material of strategic meaning.On industrial production, the single roller rotation of many employings insufflation prepares amorphous band at present.The process that single-roller method prepares amorphous thin ribbon specifically is presented below: foundry alloy is heat fused in increasing misfortune, (Tm is melting point metal to reach certain degree of superheat Tm+ △ T, △ T is the degree of superheat) after be filled with hydrogen or nitrogen, when nozzle exit pressure is greater than slit to the surface tension of molten alloy, motlten metal just sprays by nozzle, gap between warp and roll surface, arrive atwirl roll surface and form weld pool, the motlten metal weld pool is pulled the formation metal sheet band by the running roller of High Rotation Speed, the cooling water that heat is flowed through roller shell is taken away, strip is cooling rapidly on roll surface, and by the effect of centrifugal force by the roll surface of dishing out, pull, cooling carrying out continuously until the flow of molten metal clamped in pot is complete.
Hence one can see that, and this production technology is strict to the chill roll surface temperature, because roll surface directly contacts with motlten metal, determining cooling velocity and the Forming Quality of metal.Generally, the heat discharged when motlten metal solidifies can not be in time reaches the inner surface water that then is cooled by cooling roller shell outer surface to be taken away, and will cause the roller shell surface temperature to raise, and the cooling velocity of molten metal descends, and finally can not get amorphous structure; In addition, due to the heat transfer condition of cooling roller shell central area and borderline region different (conducting heat and be better than central area in border), (temperature is the highest at central point along the skewness of bandwidth direction to make the roller shell surface temperature, and the formation temperature gradient that progressively descends along both sides), then correspondingly cause strip to produce the series of process defect because inhomogeneous cooling is even.
Therefore, optimize the chill roll structure, the adjusting process parameter, within the chill-roll temperature field is controlled to uniform temperature value and certain thermograde, have very important significance to obtaining the high-quality amorphous alloy band.
At present, amorphous ribbon production is how to improve the cooling capacity of chill roll more by the structural design purpose of chill roll water channel, develop thus the cooling water channel of multiple different radiating efficiencys on the basis of " water annulus "---" solid matter trough shaped cooling water channel ", " solid matter water hole shape cooling water channel " and " spirality channel ".Although Chinese patent CN 102133619 A have recognized the inhomogeneous cooling problem of copper roller, it is by changing the flow direction of water channel, i.e. middle water inlet both sides water outlet improves.It thinks that the reason that causes inhomogeneous cooling is the temperature rise of cooling water, if first cooling copper roller middle part can prevent the inhomogeneous cooling problem of copper roller in cooling border again.The principal element that this does not catch problem to produce in fact, the temperature rise of cooling water can't cause the convection transfer rate of roller shell lower surface that obvious difference is arranged, and the amplitude of temperature rise also can be dwindled by suitable raising discharge.In addition, the double-spiral structure that this patent is mentioned and complicated cooling water recirculation system have also increased the difficulty of its processes.
Summary of the invention
The objective of the invention is a kind of cooling roller device for preparing the fast cold metal strip of high-performance.Cooling channel structure by the appropriate design chill roll, the zone that makes roller shell contact with amorphous band is along on its roller cross direction, reaching equalizing temperature, thereby improve the Amorphous Wide Ribbon goods, produces the even cooling deficiency of zone line and amorphous is organized the defect of crystallization of both sides warpage because inhomogeneous cooling is even.
The cooling roller device of the fast cold metal strip of preparation high-performance mainly comprises: the roller matrix, roller shell, the first cover plate, main shaft and the second cover plate, main shaft is provided with the roller matrix, roller matrix cylindrical side is provided with roller shell, roller matrix both sides are respectively equipped with the first cover plate, the second cover plate, the first cover plate and the second cover plate are symmetrical structure, and be connected by roller shell, the first cover plate and the second cover plate neighboring are provided with the bulge loop matched with roller shell, roller matrix cylindrical central area is provided with annular boss, roller shell inner surface central area is placed with axial square tank, the boss periphery laminating of axial square tank end face and roller matrix forms axial square flow of cooling water passage, the roller shell inner surface outside and the first cover plate, the second cover plate and roller matrix periphery surround the equidistant flow of cooling water passage of the stepped annular in a symmetrical left side jointly, the equidistant flow of cooling water passage of right stepped annular, two the equidistant flow of cooling water passages of stepped annular in left and right are connected by axial square flow of cooling water passage, the first cover plate and the second cover plate and roller matrix dual-side form respectively radially flow of cooling water passage and right side flow of cooling water passage radially of a left side, the main shaft hollow of roller matrix both sides is respectively water inlet and delivery port, on the main shaft sidewall of roller matrix both sides, be respectively equipped with into the mobile duct of water and the mobile duct of water outlet, water inlet, the mobile duct of water inlet, a left side is the flow of cooling water passage radially, the equidistant flow of cooling water passage of left stepped annular, square flow of cooling water passage, the equidistant flow of cooling water passage of right stepped annular, the right side is the flow of cooling water passage radially, the water outlet duct of flowing, delivery port is connected in turn.
The 85%-95% that interval L between described the first cover plate bulge loop end face and the second cover plate bulge loop end face is amorphous band width W to be processed.The thickness D of described the first cover plate bulge loop and the second cover plate bulge loop is 15mm～30mm.Length L on described square flow of cooling water passage is axial along roller shell ' be 55%～65% of amorphous band width W to be processed.
The present invention is creatively by the cooling water channel of two kinds of different cooling capacities---and the square water channel of circular passage and solid matter carries out reasonable combination, form the Compound cooling passage, so, the central area of band is in the cooling condition of the high strength of trough shaped passage, and the common cooling condition of border in circular passage, thereby the hot-fluid of band being passed to roller shell is redistributed, finally realize the homogenising of roller shell temperature.In addition, this device still adopts an end water inlet one to bring out the cooling system of water, without expending material resources conversion unit again.
The accompanying drawing explanation
Fig. 1 is the cooling roller device structural representation of the fast cold metal strip of preparation high-performance;
Fig. 2 is Fig. 1 partial structurtes enlarged drawings;
Fig. 3 is A-A profile in Fig. 2;
The special size that Fig. 4 is cooling roller device of the present invention requires schematic diagram;
In figure, roller matrix 1, roller shell 2, the first cover plate 3, main shaft 4, water inlet 5, delivery port 6, the second cover plate 7, left side flow, and radially radially duct 13, amorphous band to be processed 14 flow flow of cooling water passage 12, right side flow of cooling water passage 9, left stepped annular cooling water flow channel 10, right stepped annular cooling water flow channel 10 ', axial square flow of cooling water passage 11, the right side for duct 8, a left side.
The specific embodiment
Improving the problem of copper roller inhomogeneous cooling need start with from heat transfer mechanism: the cooling water that the heat that band discharges is finally flowed by way of the copper roll sleeve is taken away.If by traditional cooling roll structure setting, be that cooling duct is along having identical radiating efficiency on the roller cross direction, in this diabatic process, the characteristic distributions of hot-fluid in the copper roll sleeve is that the hot-fluid of central area is one dimensional flow, the hot-fluid of borderline region is two-dimensional flow, conduct heat and be better than central area in border, corresponding roller shell upper surface zone line temperature can be apparently higher than border naturally.Thereby the effective way of improving the copper sheathing inhomogeneous cooling is by cooling duct rationally is set, improve the intensity of cooling at roller shell center and suitably weaken the intensity of cooling on border, allow the hot-fluid redistribution, to reach as far as possible equalizing temperature.
Below with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, cooling roller shell of the present invention is described in further detail.
The cooling roller device of the fast cold metal strip of preparation high-performance mainly comprises: roller matrix 1, roller shell 2, the first cover plate 3, main shaft 4 and the second cover plate 7, main shaft 4 is provided with roller matrix 1, roller matrix 1 cylindrical side is provided with roller shell 2, roller matrix 1 both sides are respectively equipped with the first cover plate 3, the second cover plate 7, the first cover plate 3 and the second cover plate 7 are symmetrical structure, and be connected by roller shell 2, the first cover plate 3 and the second cover plate 7 neighborings are provided with the bulge loop matched with roller shell 2, roller matrix 1 cylindrical central area is provided with annular boss, roller shell 2 inner surface central areas are placed with axial square tank, the boss periphery laminating of axial square tank end face and roller matrix 1 forms axial square flow of cooling water passage 11, the roller shell 2 inner surface outsides and the first cover plate 3, the second cover plate 7 and roller matrix 1 periphery surround the equidistant flow of cooling water path 10 of the stepped annular in a symmetrical left side jointly, the equidistant flow of cooling water path 10 of right stepped annular ', two the equidistant flow of cooling water passages of stepped annular in left and right are connected by axial square flow of cooling water passage 11, the first cover plate 3 and the second cover plate 7 and roller matrix 1 dual-side form respectively radially flow of cooling water passage 9 and right side flow of cooling water passage 12 radially of a left side, the main shaft hollow of roller matrix 1 both sides is respectively water inlet 5 and delivery port 6, on the main shaft sidewall of roller matrix 1 both sides, be respectively equipped with into the mobile duct 8 of water and the mobile duct 13 of water outlet, water inlet 5, the mobile duct 8 of water inlet, a left side is flow of cooling water passage 9 radially, the equidistant flow of cooling water path 10 of left stepped annular, square flow of cooling water passage 11, the equidistant flow of cooling water path 10 of right stepped annular ', the right side is flow of cooling water passage 12 radially, the water outlet duct 13 of flowing, delivery port 6 is connected in turn.
The 85%-95% that interval L between described the first cover plate 3 bulge loop end faces and the second cover plate 7 bulge loop end faces is amorphous band 14 width W to be processed.The thickness D of described the first cover plate 3 bulge loops and the second cover plate 7 bulge loops is 15mm～30mm.Length L on described square flow of cooling water passage 11 is axial along roller shell 2 ' be 55%～65% of amorphous band 14 width W to be processed.Described roller shell 2 materials are copper alloy, and the material of the first cover plate 3 and the second cover plate 7 is structural steel.
The course of work of the present invention is as follows:
Roller matrix 1, roller shell 2, the first cover plate 3 and the second cover plate 7 are done high speed rotary motion under the drive of main shaft 4, and the outer surface that constantly has high-temperature molten metal liquid to be injected in roller shell 2 in this process is cooled to the amorphous band 14 that width is W then.For guaranteeing the efficient radiating efficiency of chill roll, the cooling water that need the water inlet 5 from main shaft 4 passes into certain flow, cooling water enters a left side radially flow of cooling water passage 9 and left stepped annular cooling water flow channel 10 through mobile duct 8, left side, then because overflow section sharply reduces to accelerate the axial square cooling-water duct 11 by center, pass through again afterwards the stepped annular flow passage 10 ' in the right side with stepped annular flow passage 10 symmetries in a left side, enter the radially mobile duct 13 of flow of cooling water passage 12 and right side, the right side, finally flow out from delivery port 6.
Claims (4)
1. a cooling roller device for preparing the fast cold metal strip of high-performance, it is characterized in that, cooling roller device mainly comprises: roller matrix (1), roller shell (2), the first cover plate (3), main shaft (4) and the second cover plate (7), main shaft (4) is provided with roller matrix (1), roller matrix (1) cylindrical side is provided with roller shell (2), roller matrix (1) both sides are respectively equipped with the first cover plate (3), the second cover plate (7), the first cover plate (3) and the second cover plate (7) are symmetrical structure, and be connected by roller shell (2), the first cover plate (3) and the second cover plate (7) neighboring are provided with the bulge loop matched with roller shell (2), roller matrix (1) cylindrical central area is provided with annular boss, roller shell (2) inner surface central area is placed with axial square tank, the boss periphery laminating of axial square tank end face and roller matrix (1) forms axial square flow of cooling water passage (11), roller shell (2) the inner surface outside and the first cover plate (3), the second cover plate (7) and roller matrix (1) periphery surround the equidistant flow of cooling water passage of the stepped annular in a symmetrical left side (10) jointly, the right equidistant flow of cooling water passage of stepped annular (10 '), two the equidistant flow of cooling water passages of stepped annular in left and right are connected by axial square flow of cooling water passage (11), the first cover plate (3) and the second cover plate (7) and roller matrix (1) dual-side form respectively radially flow of cooling water passage (9) and right side flow of cooling water passage (12) radially of a left side, the main shaft hollow of roller matrix (1) both sides is respectively water inlet (5) and delivery port (6), on the main shaft sidewall of roller matrix (1) both sides, be respectively equipped with into the mobile duct (8) of water and the mobile duct (13) of water outlet, water inlet (5), the mobile duct (8) of water inlet, a left side is flow of cooling water passage (9) radially, the left equidistant flow of cooling water passage of stepped annular (10), square flow of cooling water passage (11), the right equidistant flow of cooling water passage of stepped annular (10 '), the right side is flow of cooling water passage (12) radially, the water outlet duct (13) of flowing, delivery port (6) is connected in turn.
2. a kind of cooling roller device for preparing the fast cold metal strip of high-performance according to claim 1, it is characterized in that the 85%-95% that the interval L between described the first cover plate (3) bulge loop end face and the second cover plate (7) bulge loop end face is amorphous band to be processed (14) width W.
3. a kind of cooling roller device for preparing the fast cold metal strip of high-performance according to claim 1, is characterized in that, the thickness D of described the first cover plate (3) bulge loop and the second cover plate (7) bulge loop is 15mm～30mm.
4. a kind of cooling roller device for preparing the fast cold metal strip of high-performance according to claim 1, it is characterized in that the length L on described square flow of cooling water passage (11) is axial along roller shell (2) ' be 55%～65% of amorphous band to be processed (14) width W.
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| CN201310324151.8A CN103418763B (en) | 2013-07-30 | 2013-07-30 | Cooling roller device for preparing high-performance rapid cooling metal thin belt |
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| CN201310324151.8A CN103418763B (en) | 2013-07-30 | 2013-07-30 | Cooling roller device for preparing high-performance rapid cooling metal thin belt |
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| CN103418763B CN103418763B (en) | 2015-04-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735011A (en) * | 2017-02-24 | 2017-05-31 | 佛山科学技术学院 | The amorphous crystallizer copper sleeve cooling structure that can axially shunt |
| CN107052288A (en) * | 2017-06-28 | 2017-08-18 | 青岛云路先进材料技术有限公司 | A kind of chill roll |
| CN107350441A (en) * | 2017-09-11 | 2017-11-17 | 安徽工业大学 | A kind of flexible roller contact thin strip cooling device |
| CN108817335A (en) * | 2018-07-20 | 2018-11-16 | 芜湖君华材料有限公司 | A kind of method of liquid nitrogen and cooling water dual-cooled alloy |
| CN113198988A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | High-efficiency heat exchange cooling roller capable of improving axial temperature and thermal deformation uniform distribution |
| CN114559000A (en) * | 2022-03-03 | 2022-05-31 | 中钢设备有限公司 | Thin strip steel continuous casting equipment and crystallization roller thereof |
| CN117124132A (en) * | 2023-10-20 | 2023-11-28 | 常州克迈特数控科技有限公司 | High-precision numerical control machine tool with main shaft cooling structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735011A (en) * | 2017-02-24 | 2017-05-31 | 佛山科学技术学院 | The amorphous crystallizer copper sleeve cooling structure that can axially shunt |
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| CN107350441A (en) * | 2017-09-11 | 2017-11-17 | 安徽工业大学 | A kind of flexible roller contact thin strip cooling device |
| CN107350441B (en) * | 2017-09-11 | 2023-03-17 | 安徽工业大学 | Flexible roller contact type thin strip cooling device |
| CN108817335A (en) * | 2018-07-20 | 2018-11-16 | 芜湖君华材料有限公司 | A kind of method of liquid nitrogen and cooling water dual-cooled alloy |
| CN113198988A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | High-efficiency heat exchange cooling roller capable of improving axial temperature and thermal deformation uniform distribution |
| CN114559000A (en) * | 2022-03-03 | 2022-05-31 | 中钢设备有限公司 | Thin strip steel continuous casting equipment and crystallization roller thereof |
| CN117124132A (en) * | 2023-10-20 | 2023-11-28 | 常州克迈特数控科技有限公司 | High-precision numerical control machine tool with main shaft cooling structure |
| CN117124132B (en) * | 2023-10-20 | 2024-02-09 | 常州克迈特数控科技有限公司 | High-precision numerical control machine tool with main shaft cooling structure |
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